They have gone through so much... I can only imagine the pain.
I guess the the best we can do is send our prayers and condolence thoughts...
Also...
At the moment Ridesmart is holding a benefit trackday for the family and also for Zach Chpman's... there was a thread for that on this site... here is the link to that
https://www.ninjette.org/forums/showthread.php?t=131674
Here is the direct link to Ridesmart...
http://www.ridesmart.info/index.php?page=zac_and_jon